Remember when using your phone at the table was impolite? Next time you’re dining out, look for a table of 20 or 30-somethings and wait for their waiter to drop off a plate. Boom! Quick as a cricket, their phones will fly out and start snapping pic after pic. If you didn’t know any better you’d think a Kardashian just walked in the room. But no, that was just an appetizer. Like...